如何在单个Imageview中限制触摸区域？

public class TouchRestrictedImageView extends ImageView {
    private Rect restrictRect;

    public TouchRestrictedImageView(Context context) {
        super(context);
    }

    public TouchRestrictedImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public TouchRestrictedImageView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (restrictRect != null) {
            float x = event.getX();
            float y = event.getY();

            if (restrictRect.contains((int) x, (int) y)) {
                // 处理触摸事件
                // TODO: 在此处添加你的处理逻辑
            } else {
                // 忽略触摸事件
                return false;
            }
        }

        return super.onTouchEvent(event);
    }

    public void setRestrictRect(Rect restrictRect) {
        this.restrictRect = restrictRect;
    }
}